Quiz Discussion

If 1537* is a perfect square, then the digit which replace * is = ?

• 1] 2
• 2] 4
• 3] 5
• 4] 6

What is the least number to be added to 7700 to make it a perfect square ?

• 1] 77
• 2] 98
• 3] 131
• 4] 221
• 5] None of these

If $3\sqrt 5 + \sqrt {125}$   = 17.88, then what will be the value of $\sqrt {80} + 6\sqrt 5 ?$

• 1] 13.41
• 2] 20.46
• 3] 21.66
• 4] 22.35

The square root of $\left( {{{272}^2} - {{128}^2}} \right)$  is = ?

• 1] 144
• 2] 200
• 3] 240
• 4] 256

Given that $\sqrt {13} = 3.605$   and $\sqrt {130} = 11.40$  . find the value of $\sqrt {1.30}$  + $\sqrt {1300}$  + $\sqrt {0.0130}$   = ?

• 1] 36.164
• 2] 36.304
• 3] 37.164
• 4] 37.304